System Clock for Control Panels - WattStopper

Component
Information
Operation
®
SC-100-CP
Features
SC-100
Features
System Clock for Control Panels
♦ Time schedule control
♦ Astronomic based control
♦ Advanced holiday scheduling
♦ Battery backed time carry over
♦ Automatic daylight savings adjustment
♦ Multiple control channels
♦ FCC tested, CE certified
The System Clock is the central time controller
used in some Watt Stopper lighting control panels. It provides on/off control signals
based on time of day, day of week, holiday and calculated sunrise/sunset (astronomic) time.
Its simple programming and advanced control features make it a powerful tool for automating
control of facility lighting and electrical loads. The SC-100-CP operates with the Basic Control
contactor panels while the SC-100 functions with the ARP and ACP products.
The System Clock sends on/off commands by either hardwire connection to relay channels,
by network communication over twisted pair wiring, or by expansion port connection to a
Basic Control intelligence board. This gives the clock the ability to work in the simplest of
control applications or to automate larger, more complex systems. The clock schedules are
programmed events that command clock channels on and off. Each schedule is assigned a
number, type, time-of-day, channel, day(s) and may include other information for specific
clock event operation. A schedule can be assigned to operate any combination of days or
holiday types. This scheduling flexibility provides great functionality while simplifying programming.
All programming is securely stored in non-volatile memory. Unlike many other
time clocks, the SC-100 runs an initialization procedure to insure that commands missed
during a power outage are executed after power is restored.
The SC-100-CP, utilized with the Basic Control contactor panels, features eight control channels
that can be independently programmed. In addition, the clock enables control of eight
individual override inputs, which can be used to connect external devices such as photocells
to the Basic Control system. Programming is easy using the SC-100 keypad, LCD screen, and
fill-in-the-blank programming.
When used with The Watt Stopper’s ACP and ARP products, the SC-100 may be programmed
from a PC using The Watt Stopper’s LCS software by direct connect or by modem dial-in. The
SC-100 uses LonWorks ® networking protocol to reliably operate with ACP-Net and ARP-Net
products. Channels of the SC-100 can be linked to control any relay/contactor or group of
relay/contactors in these products.
The System Clock is typically ordered as part of a Watt Stopper lighting control panel,
whether that be a Basic Control panel or an ACP- or ARP-Net product. One system clock will
be installed in the main or central panel in a facility. All other panels in the lighting control
system receive their time based control from this centralized system clock. In some applications,
a system clock may be ordered with each lighting control panel for stand-alone panel
operation.

Product
Specifications
SC-100-CP Model
SC-100 Model
Ordering
Information
System Clock
Controls
System Clock
Wiring
The Watt Stopper ®, Inc.
Pub. No. 7903
System Clock Technical Information
♦ 120 schedules assignable to one or multiple days of the week or holiday type
♦ Temporary schedules which execute once then delete themselves
♦ Repeating schedules from 5 minutes to 10 hours
♦ 32 holidays, each up to 120 days with 3 holiday schedule types
♦ Single date, perpetual date, perpetual day of week and perpetual Easter holidays
♦ Astronomic control predicting sunrise and sunset times
♦ Astronomic offset ± 120 minutes
♦ Automatic daylight savings transition
♦ Manual on/off override from keypad
♦ Adjustable channel stagger up 1-60 seconds
♦ Selectable 12 or 24 hour time format
♦ Battery backed clock operation for up to 8 years
♦ Non-volatile program memory storage
♦ Power-up sequence, executes missed schedules following power outage
♦ Input power of 24 VAC or 24 VDC
♦ Mounting dimensions: 3.60" x 6.70" x 1.30" (91.44mm x 177.80mm x 33.02mm)
♦ FCC compliant, CE certified
♦ One year warranty
♦ Eight output channels
♦ Configuration of eight individual override inputs
♦ 32 network output channels
♦ 5 normally open isolated relays rated 1 Amp 24 VAC/VDC, assigned to channels 1-5
♦ Duration time scheduling from 1 second to 18 hours
Catalog No. Description
SC-100-CP
SC-100
Status
lights
Plug-in
port
ln 4
ln 3
ln 2
ln 1
Rtn
Rtn
Rtn
System Clock for Basic Control contactor
panels
System Clock for ARP or ACP panels
SC100
Power
Service
Comm.
Error
UP/
ON
DOWN/
OFF
Rtn
Cnl3
Tx
Cnl2
Rx
Cnl1
Net A
Net B
MENU PREV. NEXT ENTER
Pwr-
Pwr+
J2 J3
Plug-in
Expansion
Port
Port
Menu
ARP
LCD
display
ARP
ARP
Down/off
button
Previous
SC100
Next
Up/on button
Com5
Com4
Com3
Com2
Com1
Cnl5
Cnl4
Enter
Connection
terminals
(only with
SC-100
model)
Expansion
port
SC-100 and ARP-Net and ACP-Net
ARP-Net
ACP-Net
Schedule Features
Schedule Types
A schedule is assigned a type which selects the functional
operation of the clock for the assigned schedule.
A type can be timed on, timed off, dusk on/time off, time
on/dawn off or dusk on/dawn off.
Temporary Schedules
Temporary programmed schedules execute once on the
assigned day and then delete themselves from the
system clock’s memory. This is used for scheduling one
time events such as late hour activities, inventories or
extended work periods.
Repeating Schedules
This feature is used to repeat a schedule at a regular
interval and may be set from 5 minutes to 10 hours. This
is used to operate a lighting sweep at regular intervals
without needing to enter multiple schedules.
SC-100-CP and
Basic Control
contactor panel
SC100
Power
Service
Comm.
Error
Plug-in
Port
MENU PREV. NEXT ENTER
UP/
ON
DOWN/
OFF
Expansion
Port